New media permission, show dialog when not enabled for voice msg

UI now in separate renderer:
  - the permissions popup
  - settings dialog
  - debug log dialog
  - about window

Couple bug fixes:
  - About Window: Fix 'escape' to close window
  - Remove outdated dist/copy tasks from Gruntfile

Eslintified settings_view.js

js/background.js

@@ -123,6 +123,54 @@
     }
     first = false;
 
+    // These make key operations available to IPC handlers created in preload.js
+    window.Events = {
+      getDeviceName: () => textsecure.storage.user.getDeviceName(),
+
+      getThemeSetting: () => storage.get('theme-setting'),
+      setThemeSetting: value => {
+        storage.put('theme-setting', value);
+        onChangeTheme();
+      },
+      getHideMenuBar: () => storage.get('hide-menu-bar'),
+      setHideMenuBar: value => {
+        storage.get('hide-menu-bar', value);
+        window.setAutoHideMenuBar(value);
+        window.setMenuBarVisibility(!value);
+      },
+
+      getNotificationSetting: () =>
+        storage.get('notification-setting', 'message'),
+      setNotificationSetting: value =>
+        storage.get('notification-setting', value),
+      getAudioNotification: () => storage.get('audio-notification'),
+      setAudioNotification: value => storage.put('audio-notification', value),
+
+      // eslint-disable-next-line eqeqeq
+      isPrimary: () => textsecure.storage.user.getDeviceId() == '1',
+      getSyncRequest: () =>
+        new Promise((resolve, reject) => {
+          const syncRequest = window.getSyncRequest();
+          syncRequest.addEventListener('success', resolve);
+          syncRequest.addEventListener('timeout', reject);
+        }),
+      getLastSyncTime: () => storage.get('synced_at'),
+      setLastSyncTime: value => storage.put('synced_at', value),
+
+      addDarkOverlay: () => {
+        if ($('.dark-overlay').length) {
+          return;
+        }
+        $(document.body).prepend('<div class="dark-overlay"></div>');
+        $('.dark-overlay').on('click', () => $('.dark-overlay').remove());
+      },
+      removeDarkOverlay: () => $('.dark-overlay').remove(),
+      deleteAllData: () => {
+        const clearDataView = new window.Whisper.ClearDataView().render();
+        $('body').append(clearDataView.el);
+      },
+    };
+
     try {
       await ConversationController.load();
     } finally {
@@ -208,16 +256,6 @@
     Whisper.events.on('showDebugLog', () => {
       appView.openDebugLog();
     });
-    Whisper.events.on('showSettings', () => {
-      if (!appView || !appView.inboxView) {
-        console.log(
-          "background: Event: 'showSettings':" +
-            ' Expected `appView.inboxView` to exist.'
-        );
-        return;
-      }
-      appView.inboxView.showSettings();
-    });
     Whisper.events.on('unauthorized', () => {
       appView.inboxView.networkStatusView.update();
     });